dual-audio 1.0

Make videos with double audio

Dual-audio video maker

You can pass 2 playlists (or 2 lists with playlists), first for extracting audio (audio-playlists), second for resulting video (video-playlists), and get video with both audio tracks. For first playlists better use low-quality video.

Dependencies

ffmpeg (work with media), wget (download) and grep utilities.

CLI arguments

Argument	Action
-d, --out-dir	Directory where place audio and video folders
-a, --audio-playlists	Path(s) to playlist(s) with videos from which extract audio
-v, --video-playlists	Path(s) to playlist(s) with videos to add a second audio
--args	Pass shell arguments via file
--preserve-video	Preserving original videos from video-playlists
-h, --help	Show help message and exit

How it works

1. Parse templates and playlists.
2. Download audio-playlists. For each playlist:
   • Download videos to video-cache.
   • Extract audio to audio folder and select extension (container) based on ffprobe (from ffmpeg) output:

Stream #0:0: Audio: aac (LC), 48000 Hz, stereo, fltp, 94 kb/s

3. For each playlist from video-playlists download videos to video.
4. Correlate audio and video file names (for example, 1x1.aac will be added to 1x1.mp4).
5. Join audios and videos and save to video-result folder.
6. If --preserve-video is not passed, move resulting videos to video folder.